/****************************************************************************
 **
 ** Copyright (C) 2004-2008 Trolltech ASA. All rights reserved.
 **
 ** This file is part of the documentation of the Qt Toolkit.
 **
 ** This file may be used under the terms of the GNU General Public
 ** License versions 2.0 or 3.0 as published by the Free Software
 ** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
 ** included in the packaging of this file.  Alternatively you may (at
 ** your option) use any later version of the GNU General Public
 ** License if such license has been publicly approved by Trolltech ASA
 ** (or its successors, if any) and the KDE Free Qt Foundation. In
 ** addition, as a special exception, Trolltech gives you certain
 ** additional rights. These rights are described in the Trolltech GPL
 ** Exception version 1.2, which can be found at
 ** http://www.trolltech.com/products/qt/gplexception/ and in the file
 ** GPL_EXCEPTION.txt in this package.
 **
 ** Please review the following information to ensure GNU General
 ** Public Licensing requirements will be met:
 ** http://trolltech.com/products/qt/licenses/licensing/opensource/. If
 ** you are unsure which license is appropriate for your use, please
 ** review the following information:
 ** http://trolltech.com/products/qt/licenses/licensing/licensingoverview
 ** or contact the sales department at sales@trolltech.com.
 **
 ** In addition, as a special exception, Trolltech, as the sole
 ** copyright holder for Qt Designer, grants users of the Qt/Eclipse
 ** Integration plug-in the right for the Qt/Eclipse Integration to
 ** link to functionality provided by Qt Designer and its related
 ** libraries.
 **
 ** This file is provided "AS IS" with NO WARRANTY OF ANY KIND,
 ** INCLUDING THE WARRANTIES OF DESIGN, MERCHANTABILITY AND FITNESS FOR
 ** A PARTICULAR PURPOSE. Trolltech reserves all rights not expressly
 ** granted herein.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ****************************************************************************/

/* This file originally comes from Qt Tetrix example code.  I don't claim this
 * as my own work.  I mearly modified it to meet the project specifications */

#include <QtCore>

#include <stdlib.h>

#include "tetrixpiece.h"

void TetrixPiece::setShape(const int *shape, int numBlocks)
{
    nBlocks = numBlocks;

    if (!shape)
        return;

    for (int i = 0; i < nBlocks ; i++) {
        for (int j = 0; j < 2; ++j)
            coords[i][j] = shape[i * 2 + j];
    }
}

int TetrixPiece::minX() const
{
    int min = coords[0][0];
    for (int i = 1; i < nBlocks; ++i)
        min = qMin(min, coords[i][0]);
    return min;
}

int TetrixPiece::maxX() const
{
    int max = coords[0][0];
    for (int i = 1; i < nBlocks; ++i)
        max = qMax(max, coords[i][0]);
    return max;
}

int TetrixPiece::minY() const
{
    int min = coords[0][1];
    for (int i = 1; i < nBlocks; ++i)
        min = qMin(min, coords[i][1]);
    return min;
}

int TetrixPiece::maxY() const
{
    int max = coords[0][1];
    for (int i = 1; i < nBlocks; ++i)
        max = qMax(max, coords[i][1]);
    return max;
}

TetrixPiece TetrixPiece::rotatedLeft() const
{
    TetrixPiece result;
    result.nBlocks = nBlocks;
    int offset = 0;
    for (int i = 0; i < nBlocks; ++i) {
        if (x(i) > offset)
            offset = x(i);
        result.setX(i, y(i));
        result.setY(i, -x(i));
    }

    for (int i = 0; i < nBlocks; ++i) {
        result.setY(i, result.y(i) + offset);
    }
    return result;
}

TetrixPiece TetrixPiece::rotatedRight() const
{
    TetrixPiece result;
    result.nBlocks = nBlocks;
    int offset = 0;
    for (int i = 0; i < nBlocks; ++i) {
        if (y(i) > offset)
            offset = y(i);
        result.setX(i, -y(i));
        result.setY(i, x(i));
    }

    for (int i = 0; i < nBlocks; ++i) {
        result.setX(i, result.x(i) + offset);
    }
    return result;
}
